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- Committer: Teddy Hogeborn
- Date: 2011-11-24 20:15:24 UTC
- mto: (505.2.8 mandos-client-network-hooks)
- mto: This revision was merged to the branch mainline in revision 525.
- Revision ID: teddy@recompile.se-20111124201524-5w9ovzpuw3drdlgf
* network-hooks.d: New directory.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
* network-hooks.d/bridge: New example hook.
* network-hooks.d/bridge.conf: Config file for bridge example hook.
- files added:
- network-hooks.d
- files modified:
- TODO
added
removed
plugins.d/mandos-client.c
110
110
init_gnutls_session(),
111
111
GNUTLS_* */
112
112
#include <gnutls/openpgp.h>
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
113
/* gnutls_certificate_set_openpgp_key_file(),
114
GNUTLS_OPENPGP_FMT_BASE64 */
115
115
116
116
/* GPGME */
117
117
#include <gpgme.h> /* All GPGME types, constants and
133
133
const char *argp_program_bug_address = "<mandos@recompile.se>";
134
134
static const char sys_class_net[] = "/sys/class/net";
135
135
char *connect_to = NULL;
136
const char *hookdir = HOOKDIR;
136
137
137
138
/* Doubly linked list that need to be circularly linked when used */
138
139
typedef struct server{
173
174
perror(print_text);
174
175
}
175
176
177
int fprintf_plus(FILE *stream, const char *format, ...){
178
va_list ap;
179
va_start (ap, format);
180
181
TEMP_FAILURE_RETRY(fprintf(stream, "Mandos plugin %s: ",
182
program_invocation_short_name));
183
return TEMP_FAILURE_RETRY(vfprintf(stream, format, ap));
184
}
185
176
186
/*
177
187
* Make additional room in "buffer" for at least BUFFER_SIZE more
178
188
* bytes. "buffer_capacity" is how much is currently allocated,
179
189
* "buffer_length" is how much is already used.
180
190
*/
181
191
size_t incbuffer(char **buffer, size_t buffer_length,
182
size_t buffer_capacity){
192
size_t buffer_capacity){
183
193
if(buffer_length + BUFFER_SIZE > buffer_capacity){
184
194
*buffer = realloc(*buffer, buffer_capacity + BUFFER_SIZE);
185
195
if(buffer == NULL){
191
201
}
192
202
193
203
/* Add server to set of servers to retry periodically */
194
int add_server(const char *ip, uint16_t port,
195
AvahiIfIndex if_index,
196
int af){
204
int add_server(const char *ip, uint16_t port, AvahiIfIndex if_index,
205
int af){
197
206
int ret;
198
207
server *new_server = malloc(sizeof(server));
199
208
if(new_server == NULL){
201
210
return -1;
202
211
}
203
212
*new_server = (server){ .ip = strdup(ip),
204
.port = port,
205
.if_index = if_index,
206
.af = af };
213
.port = port,
214
.if_index = if_index,
215
.af = af };
207
216
if(new_server->ip == NULL){
208
217
perror_plus("strdup");
209
218
return -1;
231
240
/*
232
241
* Initialize GPGME.
233
242
*/
234
static bool init_gpgme(const char *seckey,
235
const char *pubkey, const char *tempdir){
243
static bool init_gpgme(const char *seckey, const char *pubkey,
244
const char *tempdir){
236
245
gpgme_error_t rc;
237
246
gpgme_engine_info_t engine_info;
238
247
253
262
254
263
rc = gpgme_data_new_from_fd(&pgp_data, fd);
255
264
if(rc != GPG_ERR_NO_ERROR){
256
fprintf(stderr, "Mandos plugin mandos-client: "
257
"bad gpgme_data_new_from_fd: %s: %s\n",
258
gpgme_strsource(rc), gpgme_strerror(rc));
265
fprintf_plus(stderr, "bad gpgme_data_new_from_fd: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
259
267
return false;
260
268
}
261
269
262
270
rc = gpgme_op_import(mc.ctx, pgp_data);
263
271
if(rc != GPG_ERR_NO_ERROR){
264
fprintf(stderr, "Mandos plugin mandos-client: "
265
"bad gpgme_op_import: %s: %s\n",
266
gpgme_strsource(rc), gpgme_strerror(rc));
272
fprintf_plus(stderr, "bad gpgme_op_import: %s: %s\n",
273
gpgme_strsource(rc), gpgme_strerror(rc));
267
274
return false;
268
275
}
269
276
276
283
}
277
284
278
285
if(debug){
279
fprintf(stderr, "Mandos plugin mandos-client: "
280
"Initializing GPGME\n");
286
fprintf_plus(stderr, "Initializing GPGME\n");
281
287
}
282
288
283
289
/* Init GPGME */
284
290
gpgme_check_version(NULL);
285
291
rc = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
286
292
if(rc != GPG_ERR_NO_ERROR){
287
fprintf(stderr, "Mandos plugin mandos-client: "
288
"bad gpgme_engine_check_version: %s: %s\n",
289
gpgme_strsource(rc), gpgme_strerror(rc));
293
fprintf_plus(stderr, "bad gpgme_engine_check_version: %s: %s\n",
294
gpgme_strsource(rc), gpgme_strerror(rc));
290
295
return false;
291
296
}
292
297
293
298
/* Set GPGME home directory for the OpenPGP engine only */
294
299
rc = gpgme_get_engine_info(&engine_info);
295
300
if(rc != GPG_ERR_NO_ERROR){
296
fprintf(stderr, "Mandos plugin mandos-client: "
297
"bad gpgme_get_engine_info: %s: %s\n",
298
gpgme_strsource(rc), gpgme_strerror(rc));
301
fprintf_plus(stderr, "bad gpgme_get_engine_info: %s: %s\n",
302
gpgme_strsource(rc), gpgme_strerror(rc));
299
303
return false;
300
304
}
301
305
while(engine_info != NULL){
307
311
engine_info = engine_info->next;
308
312
}
309
313
if(engine_info == NULL){
310
fprintf(stderr, "Mandos plugin mandos-client: "
311
"Could not set GPGME home dir to %s\n", tempdir);
314
fprintf_plus(stderr, "Could not set GPGME home dir to %s\n",
315
tempdir);
312
316
return false;
313
317
}
314
318
315
319
/* Create new GPGME "context" */
316
320
rc = gpgme_new(&(mc.ctx));
317
321
if(rc != GPG_ERR_NO_ERROR){
318
fprintf(stderr, "Mandos plugin mandos-client: "
319
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
320
gpgme_strerror(rc));
322
fprintf_plus(stderr, "Mandos plugin mandos-client: "
323
"bad gpgme_new: %s: %s\n", gpgme_strsource(rc),
324
gpgme_strerror(rc));
321
325
return false;
322
326
}
323
327
342
346
ssize_t plaintext_length = 0;
343
347
344
348
if(debug){
345
fprintf(stderr, "Mandos plugin mandos-client: "
346
"Trying to decrypt OpenPGP data\n");
349
fprintf_plus(stderr, "Trying to decrypt OpenPGP data\n");
347
350
}
348
351
349
352
/* Create new GPGME data buffer from memory cryptotext */
350
353
rc = gpgme_data_new_from_mem(&dh_crypto, cryptotext, crypto_size,
351
354
0);
352
355
if(rc != GPG_ERR_NO_ERROR){
353
fprintf(stderr, "Mandos plugin mandos-client: "
354
"bad gpgme_data_new_from_mem: %s: %s\n",
355
gpgme_strsource(rc), gpgme_strerror(rc));
356
fprintf_plus(stderr, "bad gpgme_data_new_from_mem: %s: %s\n",
357
gpgme_strsource(rc), gpgme_strerror(rc));
356
358
return -1;
357
359
}
358
360
359
361
/* Create new empty GPGME data buffer for the plaintext */
360
362
rc = gpgme_data_new(&dh_plain);
361
363
if(rc != GPG_ERR_NO_ERROR){
362
fprintf(stderr, "Mandos plugin mandos-client: "
363
"bad gpgme_data_new: %s: %s\n",
364
gpgme_strsource(rc), gpgme_strerror(rc));
364
fprintf_plus(stderr, "Mandos plugin mandos-client: "
365
"bad gpgme_data_new: %s: %s\n",
366
gpgme_strsource(rc), gpgme_strerror(rc));
365
367
gpgme_data_release(dh_crypto);
366
368
return -1;
367
369
}
370
372
data buffer */
371
373
rc = gpgme_op_decrypt(mc.ctx, dh_crypto, dh_plain);
372
374
if(rc != GPG_ERR_NO_ERROR){
373
fprintf(stderr, "Mandos plugin mandos-client: "
374
"bad gpgme_op_decrypt: %s: %s\n",
375
gpgme_strsource(rc), gpgme_strerror(rc));
375
fprintf_plus(stderr, "bad gpgme_op_decrypt: %s: %s\n",
376
gpgme_strsource(rc), gpgme_strerror(rc));
376
377
plaintext_length = -1;
377
378
if(debug){
378
379
gpgme_decrypt_result_t result;
379
380
result = gpgme_op_decrypt_result(mc.ctx);
380
381
if(result == NULL){
381
fprintf(stderr, "Mandos plugin mandos-client: "
382
"gpgme_op_decrypt_result failed\n");
382
fprintf_plus(stderr, "gpgme_op_decrypt_result failed\n");
383
383
} else {
384
fprintf(stderr, "Mandos plugin mandos-client: "
385
"Unsupported algorithm: %s\n",
386
result->unsupported_algorithm);
387
fprintf(stderr, "Mandos plugin mandos-client: "
388
"Wrong key usage: %u\n",
389
result->wrong_key_usage);
384
fprintf_plus(stderr, "Unsupported algorithm: %s\n",
385
result->unsupported_algorithm);
386
fprintf_plus(stderr, "Wrong key usage: %u\n",
387
result->wrong_key_usage);
390
388
if(result->file_name != NULL){
391
fprintf(stderr, "Mandos plugin mandos-client: "
392
"File name: %s\n", result->file_name);
389
fprintf_plus(stderr, "File name: %s\n", result->file_name);
393
390
}
394
391
gpgme_recipient_t recipient;
395
392
recipient = result->recipients;
396
393
while(recipient != NULL){
397
fprintf(stderr, "Mandos plugin mandos-client: "
398
"Public key algorithm: %s\n",
399
gpgme_pubkey_algo_name(recipient->pubkey_algo));
400
fprintf(stderr, "Mandos plugin mandos-client: "
401
"Key ID: %s\n", recipient->keyid);
402
fprintf(stderr, "Mandos plugin mandos-client: "
403
"Secret key available: %s\n",
404
recipient->status == GPG_ERR_NO_SECKEY
405
? "No" : "Yes");
394
fprintf_plus(stderr, "Public key algorithm: %s\n",
395
gpgme_pubkey_algo_name
396
(recipient->pubkey_algo));
397
fprintf_plus(stderr, "Key ID: %s\n", recipient->keyid);
398
fprintf_plus(stderr, "Secret key available: %s\n",
399
recipient->status == GPG_ERR_NO_SECKEY
400
? "No" : "Yes");
406
401
recipient = recipient->next;
407
402
}
408
403
}
411
406
}
412
407
413
408
if(debug){
414
fprintf(stderr, "Mandos plugin mandos-client: "
415
"Decryption of OpenPGP data succeeded\n");
409
fprintf_plus(stderr, "Decryption of OpenPGP data succeeded\n");
416
410
}
417
411
418
412
/* Seek back to the beginning of the GPGME plaintext data buffer */
425
419
*plaintext = NULL;
426
420
while(true){
427
421
plaintext_capacity = incbuffer(plaintext,
428
(size_t)plaintext_length,
429
plaintext_capacity);
422
(size_t)plaintext_length,
423
plaintext_capacity);
430
424
if(plaintext_capacity == 0){
431
perror_plus("incbuffer");
432
plaintext_length = -1;
433
goto decrypt_end;
425
perror_plus("incbuffer");
426
plaintext_length = -1;
427
goto decrypt_end;
434
428
}
435
429
436
430
ret = gpgme_data_read(dh_plain, *plaintext + plaintext_length,
449
443
}
450
444
451
445
if(debug){
452
fprintf(stderr, "Mandos plugin mandos-client: "
453
"Decrypted password is: ");
446
fprintf_plus(stderr, "Decrypted password is: ");
454
447
for(ssize_t i = 0; i < plaintext_length; i++){
455
448
fprintf(stderr, "%02hhX ", (*plaintext)[i]);
456
449
}
478
471
/* GnuTLS log function callback */
479
472
static void debuggnutls(__attribute__((unused)) int level,
480
473
const char* string){
481
fprintf(stderr, "Mandos plugin mandos-client: GnuTLS: %s", string);
474
fprintf_plus(stderr, "GnuTLS: %s", string);
482
475
}
483
476
484
477
static int init_gnutls_global(const char *pubkeyfilename,
486
479
int ret;
487
480
488
481
if(debug){
489
fprintf(stderr, "Mandos plugin mandos-client: "
490
"Initializing GnuTLS\n");
482
fprintf_plus(stderr, "Initializing GnuTLS\n");
491
483
}
492
484
493
485
ret = gnutls_global_init();
494
486
if(ret != GNUTLS_E_SUCCESS){
495
fprintf(stderr, "Mandos plugin mandos-client: "
496
"GnuTLS global_init: %s\n", safer_gnutls_strerror(ret));
487
fprintf_plus(stderr, "GnuTLS global_init: %s\n",
488
safer_gnutls_strerror(ret));
497
489
return -1;
498
490
}
499
491
508
500
/* OpenPGP credentials */
509
501
ret = gnutls_certificate_allocate_credentials(&mc.cred);
510
502
if(ret != GNUTLS_E_SUCCESS){
511
fprintf(stderr, "Mandos plugin mandos-client: "
512
"GnuTLS memory error: %s\n", safer_gnutls_strerror(ret));
503
fprintf_plus(stderr, "GnuTLS memory error: %s\n",
504
safer_gnutls_strerror(ret));
513
505
gnutls_global_deinit();
514
506
return -1;
515
507
}
516
508
517
509
if(debug){
518
fprintf(stderr, "Mandos plugin mandos-client: "
519
"Attempting to use OpenPGP public key %s and"
520
" secret key %s as GnuTLS credentials\n", pubkeyfilename,
521
seckeyfilename);
510
fprintf_plus(stderr, "Attempting to use OpenPGP public key %s and"
511
" secret key %s as GnuTLS credentials\n",
512
pubkeyfilename,
513
seckeyfilename);
522
514
}
523
515
524
516
ret = gnutls_certificate_set_openpgp_key_file
525
517
(mc.cred, pubkeyfilename, seckeyfilename,
526
518
GNUTLS_OPENPGP_FMT_BASE64);
527
519
if(ret != GNUTLS_E_SUCCESS){
528
fprintf(stderr,
529
"Mandos plugin mandos-client: "
530
"Error[%d] while reading the OpenPGP key pair ('%s',"
531
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
532
fprintf(stderr, "Mandos plugin mandos-client: "
533
"The GnuTLS error is: %s\n", safer_gnutls_strerror(ret));
520
fprintf_plus(stderr,
521
"Error[%d] while reading the OpenPGP key pair ('%s',"
522
" '%s')\n", ret, pubkeyfilename, seckeyfilename);
523
fprintf_plus(stderr, "The GnuTLS error is: %s\n",
524
safer_gnutls_strerror(ret));
534
525
goto globalfail;
535
526
}
536
527
537
528
/* GnuTLS server initialization */
538
529
ret = gnutls_dh_params_init(&mc.dh_params);
539
530
if(ret != GNUTLS_E_SUCCESS){
540
fprintf(stderr, "Mandos plugin mandos-client: "
541
"Error in GnuTLS DH parameter initialization:"
542
" %s\n", safer_gnutls_strerror(ret));
531
fprintf_plus(stderr, "Error in GnuTLS DH parameter"
532
" initialization: %s\n",
533
safer_gnutls_strerror(ret));
543
534
goto globalfail;
544
535
}
545
536
ret = gnutls_dh_params_generate2(mc.dh_params, mc.dh_bits);
546
537
if(ret != GNUTLS_E_SUCCESS){
547
fprintf(stderr, "Mandos plugin mandos-client: "
548
"Error in GnuTLS prime generation: %s\n",
549
safer_gnutls_strerror(ret));
538
fprintf_plus(stderr, "Error in GnuTLS prime generation: %s\n",
539
safer_gnutls_strerror(ret));
550
540
goto globalfail;
551
541
}
552
542
572
562
}
573
563
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
574
564
if(ret != GNUTLS_E_SUCCESS){
575
fprintf(stderr, "Mandos plugin mandos-client: "
576
"Error in GnuTLS session initialization: %s\n",
577
safer_gnutls_strerror(ret));
565
fprintf_plus(stderr,
566
"Error in GnuTLS session initialization: %s\n",
567
safer_gnutls_strerror(ret));
578
568
}
579
569
580
570
{
587
577
}
588
578
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
589
579
if(ret != GNUTLS_E_SUCCESS){
590
fprintf(stderr, "Mandos plugin mandos-client: "
591
"Syntax error at: %s\n", err);
592
fprintf(stderr, "Mandos plugin mandos-client: "
593
"GnuTLS error: %s\n", safer_gnutls_strerror(ret));
580
fprintf_plus(stderr, "Syntax error at: %s\n", err);
581
fprintf_plus(stderr, "GnuTLS error: %s\n",
582
safer_gnutls_strerror(ret));
594
583
gnutls_deinit(*session);
595
584
return -1;
596
585
}
605
594
}
606
595
} while(ret == GNUTLS_E_INTERRUPTED or ret == GNUTLS_E_AGAIN);
607
596
if(ret != GNUTLS_E_SUCCESS){
608
fprintf(stderr, "Mandos plugin mandos-client: "
609
"Error setting GnuTLS credentials: %s\n",
610
safer_gnutls_strerror(ret));
597
fprintf_plus(stderr, "Error setting GnuTLS credentials: %s\n",
598
safer_gnutls_strerror(ret));
611
599
gnutls_deinit(*session);
612
600
return -1;
613
601
}
658
646
pf = PF_INET;
659
647
break;
660
648
default:
661
fprintf(stderr, "Mandos plugin mandos-client: "
662
"Bad address family: %d\n", af);
649
fprintf_plus(stderr, "Bad address family: %d\n", af);
663
650
errno = EINVAL;
664
651
return -1;
665
652
}
670
657
}
671
658
672
659
if(debug){
673
fprintf(stderr, "Mandos plugin mandos-client: "
674
"Setting up a TCP connection to %s, port %" PRIu16
675
"\n", ip, port);
660
fprintf_plus(stderr, "Setting up a TCP connection to %s, port %"
661
PRIu16 "\n", ip, port);
676
662
}
677
663
678
664
tcp_sd = socket(pf, SOCK_STREAM, 0);
704
690
}
705
691
if(ret == 0){
706
692
int e = errno;
707
fprintf(stderr, "Mandos plugin mandos-client: "
708
"Bad address: %s\n", ip);
693
fprintf_plus(stderr, "Bad address: %s\n", ip);
709
694
errno = e;
710
695
goto mandos_end;
711
696
}
716
701
717
702
if(IN6_IS_ADDR_LINKLOCAL /* Spurious warnings from */
718
703
(&to.in6.sin6_addr)){ /* -Wstrict-aliasing=2 or lower and
719
-Wunreachable-code*/
704
-Wunreachable-code*/
720
705
if(if_index == AVAHI_IF_UNSPEC){
721
fprintf(stderr, "Mandos plugin mandos-client: "
722
"An IPv6 link-local address is incomplete"
723
" without a network interface\n");
706
fprintf_plus(stderr, "An IPv6 link-local address is"
707
" incomplete without a network interface\n");
724
708
errno = EINVAL;
725
709
goto mandos_end;
726
710
}
744
728
if(if_indextoname((unsigned int)if_index, interface) == NULL){
745
729
perror_plus("if_indextoname");
746
730
} else {
747
fprintf(stderr, "Mandos plugin mandos-client: "
748
"Connection to: %s%%%s, port %" PRIu16 "\n",
749
ip, interface, port);
731
fprintf_plus(stderr, "Connection to: %s%%%s, port %" PRIu16
732
"\n", ip, interface, port);
750
733
}
751
734
} else {
752
fprintf(stderr, "Mandos plugin mandos-client: "
753
"Connection to: %s, port %" PRIu16 "\n", ip, port);
735
fprintf_plus(stderr, "Connection to: %s, port %" PRIu16 "\n",
736
ip, port);
754
737
}
755
738
char addrstr[(INET_ADDRSTRLEN > INET6_ADDRSTRLEN) ?
756
739
INET_ADDRSTRLEN : INET6_ADDRSTRLEN] = "";
766
749
perror_plus("inet_ntop");
767
750
} else {
768
751
if(strcmp(addrstr, ip) != 0){
769
fprintf(stderr, "Mandos plugin mandos-client: "
770
"Canonical address form: %s\n", addrstr);
752
fprintf_plus(stderr, "Canonical address form: %s\n", addrstr);
771
753
}
772
754
}
773
755
}
801
783
while(true){
802
784
size_t out_size = strlen(out);
803
785
ret = (int)TEMP_FAILURE_RETRY(write(tcp_sd, out + written,
804
out_size - written));
786
out_size - written));
805
787
if(ret == -1){
806
788
int e = errno;
807
789
perror_plus("write");
827
809
}
828
810
829
811
if(debug){
830
fprintf(stderr, "Mandos plugin mandos-client: "
831
"Establishing TLS session with %s\n", ip);
812
fprintf_plus(stderr, "Establishing TLS session with %s\n", ip);
832
813
}
833
814
834
815
if(quit_now){
854
835
855
836
if(ret != GNUTLS_E_SUCCESS){
856
837
if(debug){
857
fprintf(stderr, "Mandos plugin mandos-client: "
858
"*** GnuTLS Handshake failed ***\n");
838
fprintf_plus(stderr, "*** GnuTLS Handshake failed ***\n");
859
839
gnutls_perror(ret);
860
840
}
861
841
errno = EPROTO;
865
845
/* Read OpenPGP packet that contains the wanted password */
866
846
867
847
if(debug){
868
fprintf(stderr, "Mandos plugin mandos-client: "
869
"Retrieving OpenPGP encrypted password from %s\n", ip);
848
fprintf_plus(stderr, "Retrieving OpenPGP encrypted password from"
849
" %s\n", ip);
870
850
}
871
851
872
852
while(true){
877
857
}
878
858
879
859
buffer_capacity = incbuffer(&buffer, buffer_length,
880
buffer_capacity);
860
buffer_capacity);
881
861
if(buffer_capacity == 0){
882
862
int e = errno;
883
863
perror_plus("incbuffer");
910
890
}
911
891
} while(ret == GNUTLS_E_AGAIN or ret == GNUTLS_E_INTERRUPTED);
912
892
if(ret < 0){
913
fprintf(stderr, "Mandos plugin mandos-client: "
914
"*** GnuTLS Re-handshake failed ***\n");
893
fprintf_plus(stderr, "*** GnuTLS Re-handshake failed "
894
"***\n");
915
895
gnutls_perror(ret);
916
896
errno = EPROTO;
917
897
goto mandos_end;
918
898
}
919
899
break;
920
900
default:
921
fprintf(stderr, "Mandos plugin mandos-client: "
922
"Unknown error while reading data from"
923
" encrypted session with Mandos server\n");
901
fprintf_plus(stderr, "Unknown error while reading data from"
902
" encrypted session with Mandos server\n");
924
903
gnutls_bye(session, GNUTLS_SHUT_RDWR);
925
904
errno = EIO;
926
905
goto mandos_end;
931
910
}
932
911
933
912
if(debug){
934
fprintf(stderr, "Mandos plugin mandos-client: "
935
"Closing TLS session\n");
913
fprintf_plus(stderr, "Closing TLS session\n");
936
914
}
937
915
938
916
if(quit_now){
950
928
951
929
if(buffer_length > 0){
952
930
ssize_t decrypted_buffer_size;
953
decrypted_buffer_size = pgp_packet_decrypt(buffer,
954
buffer_length,
931
decrypted_buffer_size = pgp_packet_decrypt(buffer, buffer_length,
955
932
&decrypted_buffer);
956
933
if(decrypted_buffer_size >= 0){
957
934
968
945
if(ret == 0 and ferror(stdout)){
969
946
int e = errno;
970
947
if(debug){
971
fprintf(stderr, "Mandos plugin mandos-client: "
972
"Error writing encrypted data: %s\n",
973
strerror(errno));
948
fprintf_plus(stderr, "Error writing encrypted data: %s\n",
949
strerror(errno));
974
950
}
975
951
errno = e;
976
952
goto mandos_end;
1033
1009
switch(event){
1034
1010
default:
1035
1011
case AVAHI_RESOLVER_FAILURE:
1036
fprintf(stderr, "Mandos plugin mandos-client: "
1037
"(Avahi Resolver) Failed to resolve service '%s'"
1038
" of type '%s' in domain '%s': %s\n", name, type, domain,
1039
avahi_strerror(avahi_server_errno(mc.server)));
1012
fprintf_plus(stderr, "(Avahi Resolver) Failed to resolve service "
1013
"'%s' of type '%s' in domain '%s': %s\n", name, type,
1014
domain,
1015
avahi_strerror(avahi_server_errno(mc.server)));
1040
1016
break;
1041
1017
1042
1018
case AVAHI_RESOLVER_FOUND:
1044
1020
char ip[AVAHI_ADDRESS_STR_MAX];
1045
1021
avahi_address_snprint(ip, sizeof(ip), address);
1046
1022
if(debug){
1047
fprintf(stderr, "Mandos plugin mandos-client: "
1048
"Mandos server \"%s\" found on %s (%s, %"
1049
PRIdMAX ") on port %" PRIu16 "\n", name, host_name,
1050
ip, (intmax_t)interface, port);
1023
fprintf_plus(stderr, "Mandos server \"%s\" found on %s (%s, %"
1024
PRIdMAX ") on port %" PRIu16 "\n", name,
1025
host_name, ip, (intmax_t)interface, port);
1051
1026
}
1052
1027
int ret = start_mandos_communication(ip, port, interface,
1053
1028
avahi_proto_to_af(proto));
1085
1060
default:
1086
1061
case AVAHI_BROWSER_FAILURE:
1087
1062
1088
fprintf(stderr, "Mandos plugin mandos-client: "
1089
"(Avahi browser) %s\n",
1090
avahi_strerror(avahi_server_errno(mc.server)));
1063
fprintf_plus(stderr, "(Avahi browser) %s\n",
1064
avahi_strerror(avahi_server_errno(mc.server)));
1091
1065
avahi_simple_poll_quit(mc.simple_poll);
1092
1066
return;
1093
1067
1100
1074
if(avahi_s_service_resolver_new(mc.server, interface, protocol,
1101
1075
name, type, domain, protocol, 0,
1102
1076
resolve_callback, NULL) == NULL)
1103
fprintf(stderr, "Mandos plugin mandos-client: "
1104
"Avahi: Failed to resolve service '%s': %s\n",
1105
name, avahi_strerror(avahi_server_errno(mc.server)));
1077
fprintf_plus(stderr, "Avahi: Failed to resolve service '%s':"
1078
" %s\n", name,
1079
avahi_strerror(avahi_server_errno(mc.server)));
1106
1080
break;
1107
1081
1108
1082
case AVAHI_BROWSER_REMOVE:
1111
1085
case AVAHI_BROWSER_ALL_FOR_NOW:
1112
1086
case AVAHI_BROWSER_CACHE_EXHAUSTED:
1113
1087
if(debug){
1114
fprintf(stderr, "Mandos plugin mandos-client: "
1115
"No Mandos server found, still searching...\n");
1088
fprintf_plus(stderr, "No Mandos server found, still"
1089
" searching...\n");
1116
1090
}
1117
1091
break;
1118
1092
}
1157
1131
/* Reject the loopback device */
1158
1132
if(ifr->ifr_flags & IFF_LOOPBACK){
1159
1133
if(debug){
1160
fprintf(stderr, "Mandos plugin mandos-client: "
1161
"Rejecting loopback interface \"%s\"\n", ifname);
1134
fprintf_plus(stderr, "Rejecting loopback interface \"%s\"\n",
1135
ifname);
1162
1136
}
1163
1137
return false;
1164
1138
}
1165
1139
/* Accept point-to-point devices only if connect_to is specified */
1166
1140
if(connect_to != NULL and (ifr->ifr_flags & IFF_POINTOPOINT)){
1167
1141
if(debug){
1168
fprintf(stderr, "Mandos plugin mandos-client: "
1169
"Accepting point-to-point interface \"%s\"\n", ifname);
1142
fprintf_plus(stderr, "Accepting point-to-point interface"
1143
" \"%s\"\n", ifname);
1170
1144
}
1171
1145
return true;
1172
1146
}
1173
1147
/* Otherwise, reject non-broadcast-capable devices */
1174
1148
if(not (ifr->ifr_flags & IFF_BROADCAST)){
1175
1149
if(debug){
1176
fprintf(stderr, "Mandos plugin mandos-client: "
1177
"Rejecting non-broadcast interface \"%s\"\n", ifname);
1150
fprintf_plus(stderr, "Rejecting non-broadcast interface"
1151
" \"%s\"\n", ifname);
1178
1152
}
1179
1153
return false;
1180
1154
}
1181
1155
/* Reject non-ARP interfaces (including dummy interfaces) */
1182
1156
if(ifr->ifr_flags & IFF_NOARP){
1183
1157
if(debug){
1184
fprintf(stderr, "Mandos plugin mandos-client: "
1185
"Rejecting non-ARP interface \"%s\"\n", ifname);
1158
fprintf_plus(stderr, "Rejecting non-ARP interface \"%s\"\n",
1159
ifname);
1186
1160
}
1187
1161
return false;
1188
1162
}
1189
1163
1190
1164
/* Accept this device */
1191
1165
if(debug){
1192
fprintf(stderr, "Mandos plugin mandos-client: "
1193
"Interface \"%s\" is good\n", ifname);
1166
fprintf_plus(stderr, "Interface \"%s\" is good\n", ifname);
1194
1167
}
1195
1168
return true;
1196
1169
}
1208
1181
struct ifreq ifr;
1209
1182
if(not get_flags(if_entry->d_name, &ifr)){
1210
1183
if(debug){
1211
fprintf(stderr, "Mandos plugin mandos-client: "
1212
"Failed to get flags for interface \"%s\"\n",
1213
if_entry->d_name);
1184
fprintf_plus(stderr, "Failed to get flags for interface "
1185
"\"%s\"\n", if_entry->d_name);
1214
1186
}
1215
1187
return 0;
1216
1188
}
1234
1206
struct ifreq ifr;
1235
1207
if(not get_flags(if_entry->d_name, &ifr)){
1236
1208
if(debug){
1237
fprintf(stderr, "Mandos plugin mandos-client: "
1238
"Failed to get flags for interface \"%s\"\n",
1239
if_entry->d_name);
1209
fprintf_plus(stderr, "Failed to get flags for interface "
1210
"\"%s\"\n", if_entry->d_name);
1240
1211
}
1241
1212
return 0;
1242
1213
}
1244
1215
/* Reject down interfaces */
1245
1216
if(not (ifr.ifr_flags & IFF_UP)){
1246
1217
if(debug){
1247
fprintf(stderr, "Mandos plugin mandos-client: "
1248
"Rejecting down interface \"%s\"\n",
1249
if_entry->d_name);
1218
fprintf_plus(stderr, "Rejecting down interface \"%s\"\n",
1219
if_entry->d_name);
1250
1220
}
1251
1221
return 0;
1252
1222
}
1254
1224
/* Reject non-running interfaces */
1255
1225
if(not (ifr.ifr_flags & IFF_RUNNING)){
1256
1226
if(debug){
1257
fprintf(stderr, "Mandos plugin mandos-client: "
1258
"Rejecting non-running interface \"%s\"\n",
1259
if_entry->d_name);
1227
fprintf_plus(stderr, "Rejecting non-running interface \"%s\"\n",
1228
if_entry->d_name);
1260
1229
}
1261
1230
return 0;
1262
1231
}
1281
1250
/* Is this directory entry a runnable program? */
1282
1251
int runnable_hook(const struct dirent *direntry){
1283
1252
int ret;
1253
size_t sret;
1284
1254
struct stat st;
1285
1255
1286
1256
if((direntry->d_name)[0] == '\0'){
1288
1258
return 0;
1289
1259
}
1290
1260
1291
/* Save pointer to last character */
1292
char *end = strchr(direntry->d_name, '\0')-1;
1293
1294
if(*end == '~'){
1295
/* Backup name~ */
1296
return 0;
1297
}
1298
1299
if(((direntry->d_name)[0] == '#')
1300
and (*end == '#')){
1301
/* Temporary #name# */
1302
return 0;
1303
}
1304
1305
/* XXX more rules here */
1306
1307
ret = stat(direntry->d_name, &st);
1261
sret = strspn(direntry->d_name, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
1262
"abcdefghijklmnopqrstuvwxyz"
1263
"0123456789"
1264
"_-");
1265
if((direntry->d_name)[sret] != '\0'){
1266
/* Contains non-allowed characters */
1267
if(debug){
1268
fprintf_plus(stderr, "Ignoring hook \"%s\" with bad name\n",
1269
direntry->d_name);
1270
}
1271
return 0;
1272
}
1273
1274
char *fullname = NULL;
1275
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1276
if(ret < 0){
1277
perror_plus("asprintf");
1278
return 0;
1279
}
1280
1281
ret = stat(fullname, &st);
1308
1282
if(ret == -1){
1309
1283
if(debug){
1310
perror_plus("Could not stat plugin");
1284
perror_plus("Could not stat hook");
1311
1285
}
1312
1286
return 0;
1313
1287
}
1314
1288
if(not (S_ISREG(st.st_mode))){
1315
1289
/* Not a regular file */
1290
if(debug){
1291
fprintf_plus(stderr, "Ignoring hook \"%s\" - not a file\n",
1292
direntry->d_name);
1293
}
1316
1294
return 0;
1317
1295
}
1318
1296
if(not (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))){
1319
1297
/* Not executable */
1298
if(debug){
1299
fprintf_plus(stderr, "Ignoring hook \"%s\" - not executable\n",
1300
direntry->d_name);
1301
}
1320
1302
return 0;
1321
1303
}
1322
1304
return 1;
1331
1313
while(true){
1332
1314
if(mc.current_server == NULL){
1333
1315
if (debug){
1334
fprintf(stderr, "Mandos plugin mandos-client: "
1335
"Wait until first server is found. No timeout!\n");
1316
fprintf_plus(stderr, "Wait until first server is found."
1317
" No timeout!\n");
1336
1318
}
1337
1319
ret = avahi_simple_poll_iterate(s, -1);
1338
1320
} else {
1339
1321
if (debug){
1340
fprintf(stderr, "Mandos plugin mandos-client: "
1341
"Check current_server if we should run it,"
1342
" or wait\n");
1322
fprintf_plus(stderr, "Check current_server if we should run"
1323
" it, or wait\n");
1343
1324
}
1344
1325
/* the current time */
1345
1326
ret = clock_gettime(CLOCK_MONOTONIC, &now);
1361
1342
- ((intmax_t)waited_time.tv_nsec / 1000000));
1362
1343
1363
1344
if (debug){
1364
fprintf(stderr, "Mandos plugin mandos-client: "
1365
"Blocking for %" PRIdMAX " ms\n", block_time);
1345
fprintf_plus(stderr, "Blocking for %" PRIdMAX " ms\n",
1346
block_time);
1366
1347
}
1367
1348
1368
1349
if(block_time <= 0){
1395
1376
}
1396
1377
}
1397
1378
1379
bool run_network_hooks(const char *mode, const char *interface,
1380
const float delay){
1381
struct dirent **direntries;
1382
struct dirent *direntry;
1383
int ret;
1384
int numhooks = scandir(hookdir, &direntries, runnable_hook,
1385
alphasort);
1386
if(numhooks == -1){
1387
perror_plus("scandir");
1388
} else {
1389
int devnull = open("/dev/null", O_RDONLY);
1390
for(int i = 0; i < numhooks; i++){
1391
direntry = direntries[0];
1392
char *fullname = NULL;
1393
ret = asprintf(&fullname, "%s/%s", hookdir, direntry->d_name);
1394
if(ret < 0){
1395
perror_plus("asprintf");
1396
continue;
1397
}
1398
pid_t hook_pid = fork();
1399
if(hook_pid == 0){
1400
/* Child */
1401
dup2(devnull, STDIN_FILENO);
1402
close(devnull);
1403
dup2(STDERR_FILENO, STDOUT_FILENO);
1404
ret = setenv("MANDOSNETHOOKDIR", hookdir, 1);
1405
if(ret == -1){
1406
perror_plus("setenv");
1407
return false;
1408
}
1409
ret = setenv("DEVICE", interface, 1);
1410
if(ret == -1){
1411
perror_plus("setenv");
1412
return false;
1413
}
1414
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1415
if(ret == -1){
1416
perror_plus("setenv");
1417
return false;
1418
}
1419
ret = setenv("MODE", mode, 1);
1420
if(ret == -1){
1421
perror_plus("setenv");
1422
return false;
1423
}
1424
char *delaystring;
1425
ret = asprintf(&delaystring, "%f", delay);
1426
if(ret == -1){
1427
perror_plus("asprintf");
1428
return false;
1429
}
1430
ret = setenv("DELAY", delaystring, 1);
1431
if(ret == -1){
1432
free(delaystring);
1433
perror_plus("setenv");
1434
return false;
1435
}
1436
free(delaystring);
1437
ret = execl(fullname, direntry->d_name, mode, NULL);
1438
perror_plus("execl");
1439
} else {
1440
int status;
1441
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1442
perror_plus("waitpid");
1443
free(fullname);
1444
continue;
1445
}
1446
if(WIFEXITED(status)){
1447
if(WEXITSTATUS(status) != 0){
1448
fprintf_plus(stderr, "Warning: network hook \"%s\" exited"
1449
" with status %d\n", direntry->d_name,
1450
WEXITSTATUS(status));
1451
free(fullname);
1452
continue;
1453
}
1454
} else if(WIFSIGNALED(status)){
1455
fprintf_plus(stderr, "Warning: network hook \"%s\" died by"
1456
" signal %d\n", direntry->d_name,
1457
WTERMSIG(status));
1458
free(fullname);
1459
continue;
1460
} else {
1461
fprintf_plus(stderr, "Warning: network hook \"%s\""
1462
" crashed\n", direntry->d_name);
1463
free(fullname);
1464
continue;
1465
}
1466
}
1467
free(fullname);
1468
if(quit_now){
1469
break;
1470
}
1471
}
1472
close(devnull);
1473
}
1474
return true;
1475
}
1476
1398
1477
int main(int argc, char *argv[]){
1399
1478
AvahiSServiceBrowser *sb = NULL;
1400
1479
int error;
1482
1561
.arg = "SECONDS",
1483
1562
.doc = "Retry interval used when denied by the mandos server",
1484
1563
.group = 2 },
1564
{ .name = "network-hook-dir", .key = 133,
1565
.arg = "DIR",
1566
.doc = "Directory where network hooks are located",
1567
.group = 2 },
1485
1568
/*
1486
1569
* These reproduce what we would get without ARGP_NO_HELP
1487
1570
*/
1540
1623
argp_error(state, "Bad retry interval");
1541
1624
}
1542
1625
break;
1626
case 133: /* --network-hook-dir */
1627
hookdir = arg;
1628
break;
1543
1629
/*
1544
1630
* These reproduce what we would get without ARGP_NO_HELP
1545
1631
*/
1551
1637
argp_state_help(state, state->out_stream,
1552
1638
ARGP_HELP_USAGE | ARGP_HELP_EXIT_ERR);
1553
1639
case 'V': /* --version */
1554
fprintf(state->out_stream, "Mandos plugin mandos-client: ");
1555
fprintf(state->out_stream, "%s\n", argp_program_version);
1640
fprintf_plus(state->out_stream,
1641
"Mandos plugin mandos-client: ");
1642
fprintf_plus(state->out_stream, "%s\n", argp_program_version);
1556
1643
exit(argp_err_exit_status);
1557
1644
break;
1558
1645
default:
1603
1690
if(ret == -1){
1604
1691
perror_plus("fstat");
1605
1692
} else {
1606
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1693
if(S_ISREG(st.st_mode)
1694
and st.st_uid == 0 and st.st_gid == 0){
1607
1695
ret = fchown(seckey_fd, uid, gid);
1608
1696
if(ret == -1){
1609
1697
perror_plus("fchown");
1623
1711
if(ret == -1){
1624
1712
perror_plus("fstat");
1625
1713
} else {
1626
if(S_ISREG(st.st_mode) and st.st_uid == 0 and st.st_gid == 0){
1714
if(S_ISREG(st.st_mode)
1715
and st.st_uid == 0 and st.st_gid == 0){
1627
1716
ret = fchown(pubkey_fd, uid, gid);
1628
1717
if(ret == -1){
1629
1718
perror_plus("fchown");
1642
1731
}
1643
1732
}
1644
1733
1645
/* Find network hooks and run them */
1734
/* Run network hooks */
1646
1735
{
1647
struct dirent **direntries;
1648
struct dirent *direntry;
1649
int numhooks = scandir(HOOKDIR, &direntries, runnable_hook,
1650
alphasort);
1651
if(numhooks == -1){
1652
perror_plus("scandir");
1653
} else {
1654
int devnull = open("/dev/null", O_RDONLY);
1655
for(int i = 0; i < numhooks; i++){
1656
direntry = direntries[0];
1657
char *fullname = NULL;
1658
ret = asprintf(&fullname, "%s/%s", tempdir,
1659
direntry->d_name);
1660
if(ret < 0){
1661
perror_plus("asprintf");
1662
continue;
1663
}
1664
pid_t hook_pid = fork();
1665
if(hook_pid == 0){
1666
/* Child */
1667
dup2(devnull, STDIN_FILENO);
1668
close(devnull);
1669
dup2(STDERR_FILENO, STDOUT_FILENO);
1670
ret = setenv("DEVICE", interface, 1);
1671
if(ret == -1){
1672
perror_plus("setenv");
1673
exit(1);
1674
}
1675
ret = setenv("VERBOSE", debug ? "1" : "0", 1);
1676
if(ret == -1){
1677
perror_plus("setenv");
1678
exit(1);
1679
}
1680
ret = setenv("MODE", "start", 1);
1681
if(ret == -1){
1682
perror_plus("setenv");
1683
exit(1);
1684
}
1685
char *delaystring;
1686
ret = asprintf(&delaystring, "%f", delay);
1687
if(ret == -1){
1688
perror_plus("asprintf");
1689
exit(1);
1690
}
1691
ret = setenv("DELAY", delaystring, 1);
1692
if(ret == -1){
1693
free(delaystring);
1694
perror_plus("setenv");
1695
exit(1);
1696
}
1697
free(delaystring);
1698
ret = execl(fullname, direntry->d_name, "start", NULL);
1699
perror_plus("execl");
1700
} else {
1701
int status;
1702
if(TEMP_FAILURE_RETRY(waitpid(hook_pid, &status, 0)) == -1){
1703
perror_plus("waitpid");
1704
free(fullname);
1705
continue;
1706
}
1707
if(WIFEXITED(status)){
1708
if(WEXITSTATUS(status) != 0){
1709
fprintf(stderr, "Mandos plugin mandos-client: "
1710
"Warning: network hook \"%s\" exited"
1711
" with status %d\n", direntry->d_name,
1712
WEXITSTATUS(status));
1713
free(fullname);
1714
continue;
1715
}
1716
} else if(WIFSIGNALED(status)){
1717
fprintf(stderr, "Mandos plugin mandos-client: "
1718
"Warning: network hook \"%s\" died by"
1719
" signal %d\n", direntry->d_name,
1720
WTERMSIG(status));
1721
free(fullname);
1722
continue;
1723
} else {
1724
fprintf(stderr, "Mandos plugin mandos-client: "
1725
"Warning: network hook \"%s\" crashed\n",
1726
direntry->d_name);
1727
free(fullname);
1728
continue;
1729
}
1730
}
1731
free(fullname);
1732
if(quit_now){
1733
goto end;
1734
}
1735
}
1736
close(devnull);
1736
/* Re-raise priviliges */
1737
errno = 0;
1738
ret = seteuid(0);
1739
if(ret == -1){
1740
perror_plus("seteuid");
1741
}
1742
if(not run_network_hooks("start", interface, delay)){
1743
goto end;
1744
}
1745
/* Lower privileges */
1746
errno = 0;
1747
ret = seteuid(uid);
1748
if(ret == -1){
1749
perror_plus("seteuid");
1737
1750
}
1738
1751
}
1739
1752
1756
1769
/* Pick the first interface returned */
1757
1770
interface = strdup(direntries[0]->d_name);
1758
1771
if(debug){
1759
fprintf(stderr, "Mandos plugin mandos-client: "
1760
"Using interface \"%s\"\n", interface);
1772
fprintf_plus(stderr, "Using interface \"%s\"\n", interface);
1761
1773
}
1762
1774
if(interface == NULL){
1763
1775
perror_plus("malloc");
1768
1780
free(direntries);
1769
1781
} else {
1770
1782
free(direntries);
1771
fprintf(stderr, "Mandos plugin mandos-client: "
1772
"Could not find a network interface\n");
1783
fprintf_plus(stderr, "Could not find a network interface\n");
1773
1784
exitcode = EXIT_FAILURE;
1774
1785
goto end;
1775
1786
}
1781
1792
srand((unsigned int) time(NULL));
1782
1793
mc.simple_poll = avahi_simple_poll_new();
1783
1794
if(mc.simple_poll == NULL){
1784
fprintf(stderr, "Mandos plugin mandos-client: "
1785
"Avahi: Failed to create simple poll object.\n");
1795
fprintf_plus(stderr,
1796
"Avahi: Failed to create simple poll object.\n");
1786
1797
exitcode = EX_UNAVAILABLE;
1787
1798
goto end;
1788
1799
}
1854
1865
if(strcmp(interface, "none") != 0){
1855
1866
if_index = (AvahiIfIndex) if_nametoindex(interface);
1856
1867
if(if_index == 0){
1857
fprintf(stderr, "Mandos plugin mandos-client: "
1858
"No such interface: \"%s\"\n", interface);
1868
fprintf_plus(stderr, "No such interface: \"%s\"\n", interface);
1859
1869
exitcode = EX_UNAVAILABLE;
1860
1870
goto end;
1861
1871
}
1981
1991
#endif /* __linux__ */
1982
1992
/* Lower privileges */
1983
1993
errno = 0;
1984
if(take_down_interface){
1985
/* Lower privileges */
1986
ret = seteuid(uid);
1987
if(ret == -1){
1988
perror_plus("seteuid");
1989
}
1990
} else {
1991
/* Lower privileges permanently */
1992
ret = setuid(uid);
1993
if(ret == -1){
1994
perror_plus("setuid");
1995
}
1994
/* Lower privileges */
1995
ret = seteuid(uid);
1996
if(ret == -1){
1997
perror_plus("seteuid");
1996
1998
}
1997
1999
}
1998
2000
2002
2004
2003
2005
ret = init_gnutls_global(pubkey, seckey);
2004
2006
if(ret == -1){
2005
fprintf(stderr, "Mandos plugin mandos-client: "
2006
"init_gnutls_global failed\n");
2007
fprintf_plus(stderr, "init_gnutls_global failed\n");
2007
2008
exitcode = EX_UNAVAILABLE;
2008
2009
goto end;
2009
2010
} else {
2025
2026
}
2026
2027
2027
2028
if(not init_gpgme(pubkey, seckey, tempdir)){
2028
fprintf(stderr, "Mandos plugin mandos-client: "
2029
"init_gpgme failed\n");
2029
fprintf_plus(stderr, "init_gpgme failed\n");
2030
2030
exitcode = EX_UNAVAILABLE;
2031
2031
goto end;
2032
2032
} else {
2042
2042
/* (Mainly meant for debugging) */
2043
2043
char *address = strrchr(connect_to, ':');
2044
2044
if(address == NULL){
2045
fprintf(stderr, "Mandos plugin mandos-client: "
2046
"No colon in address\n");
2045
fprintf_plus(stderr, "No colon in address\n");
2047
2046
exitcode = EX_USAGE;
2048
2047
goto end;
2049
2048
}
2057
2056
tmpmax = strtoimax(address+1, &tmp, 10);
2058
2057
if(errno != 0 or tmp == address+1 or *tmp != '\0'
2059
2058
or tmpmax != (uint16_t)tmpmax){
2060
fprintf(stderr, "Mandos plugin mandos-client: "
2061
"Bad port number\n");
2059
fprintf_plus(stderr, "Bad port number\n");
2062
2060
exitcode = EX_USAGE;
2063
2061
goto end;
2064
2062
}
2094
2092
break;
2095
2093
}
2096
2094
if(debug){
2097
fprintf(stderr, "Mandos plugin mandos-client: "
2098
"Retrying in %d seconds\n", (int)retry_interval);
2095
fprintf_plus(stderr, "Retrying in %d seconds\n",
2096
(int)retry_interval);
2099
2097
}
2100
2098
sleep((int)retry_interval);
2101
2099
}
2131
2129
2132
2130
/* Check if creating the Avahi server object succeeded */
2133
2131
if(mc.server == NULL){
2134
fprintf(stderr, "Mandos plugin mandos-client: "
2135
"Failed to create Avahi server: %s\n",
2136
avahi_strerror(error));
2132
fprintf_plus(stderr, "Failed to create Avahi server: %s\n",
2133
avahi_strerror(error));
2137
2134
exitcode = EX_UNAVAILABLE;
2138
2135
goto end;
2139
2136
}
2147
2144
AVAHI_PROTO_UNSPEC, "_mandos._tcp",
2148
2145
NULL, 0, browse_callback, NULL);
2149
2146
if(sb == NULL){
2150
fprintf(stderr, "Mandos plugin mandos-client: "
2151
"Failed to create service browser: %s\n",
2152
avahi_strerror(avahi_server_errno(mc.server)));
2147
fprintf_plus(stderr, "Failed to create service browser: %s\n",
2148
avahi_strerror(avahi_server_errno(mc.server)));
2153
2149
exitcode = EX_UNAVAILABLE;
2154
2150
goto end;
2155
2151
}
2161
2157
/* Run the main loop */
2162
2158
2163
2159
if(debug){
2164
fprintf(stderr, "Mandos plugin mandos-client: "
2165
"Starting Avahi loop search\n");
2160
fprintf_plus(stderr, "Starting Avahi loop search\n");
2166
2161
}
2167
2162
2168
2163
ret = avahi_loop_with_timeout(mc.simple_poll,
2169
2164
(int)(retry_interval * 1000));
2170
2165
if(debug){
2171
fprintf(stderr, "Mandos plugin mandos-client: "
2172
"avahi_loop_with_timeout exited %s\n",
2173
(ret == 0) ? "successfully" : "with error");
2166
fprintf_plus(stderr, "avahi_loop_with_timeout exited %s\n",
2167
(ret == 0) ? "successfully" : "with error");
2174
2168
}
2175
2169
2176
2170
end:
2177
2171
2178
2172
if(debug){
2179
fprintf(stderr, "Mandos plugin mandos-client: "
2180
"%s exiting\n", argv[0]);
2173
fprintf_plus(stderr, "%s exiting\n", argv[0]);
2181
2174
}
2182
2175
2183
2176
/* Cleanup things */
2211
2204
}
2212
2205
}
2213
2206
2214
/* XXX run network hooks "stop" here */
2215
2216
/* Take down the network interface */
2217
if(take_down_interface){
2218
/* Re-raise priviliges */
2207
/* Re-raise priviliges */
2208
{
2219
2209
errno = 0;
2220
2210
ret = seteuid(0);
2221
2211
if(ret == -1){
2222
2212
perror_plus("seteuid");
2223
2213
}
2224
if(geteuid() == 0){
2214
/* Run network hooks */
2215
if(not run_network_hooks("stop", interface, delay)){
2216
goto end;
2217
}
2218
2219
/* Take down the network interface */
2220
if(take_down_interface and geteuid() == 0){
2225
2221
ret = ioctl(sd, SIOCGIFFLAGS, &network);
2226
2222
if(ret == -1){
2227
2223
perror_plus("ioctl SIOCGIFFLAGS");
2236
2232
if(ret == -1){
2237
2233
perror_plus("close");
2238
2234
}
2239
/* Lower privileges permanently */
2240
errno = 0;
2241
ret = setuid(uid);
2242
if(ret == -1){
2243
perror_plus("setuid");
2244
}
2245
2235
}
2246
2236
}
2237
/* Lower privileges permanently */
2238
errno = 0;
2239
ret = setuid(uid);
2240
if(ret == -1){
2241
perror_plus("setuid");
2242
}
2247
2243
2248
2244
/* Removes the GPGME temp directory and all files inside */
2249
2245
if(tempdir_created){
2263
2259
}
2264
2260
ret = remove(fullname);
2265
2261
if(ret == -1){
2266
fprintf(stderr, "Mandos plugin mandos-client: "
2267
"remove(\"%s\"): %s\n", fullname, strerror(errno));
2262
fprintf_plus(stderr, "remove(\"%s\"): %s\n", fullname,
2263
strerror(errno));
2268
2264
}
2269
2265
free(fullname);
2270
2266
}
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0